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100 _a Barhoumi, Chéïma
_952295
245 _aGradually increasing forest fire activity during the Holocene in the northern Ural region (Komi Republic, Russia)/
260 _bsage
_c2019
300 _aVol 29, Issue 12, 2019 : (1906-1920 p.).
520 _aIn many boreal regions of Russia the past natural variability of forest fire activity remains largely undocumented, preventing accurate assessment of the impact of current climate warming on forest ecosystem dynamics. This study aims to reconstruct the Holocene fire history of the northern Ural mountain foothills, in the Komi Republic, based on analyses of charcoal particles from peatland deposits and coupled with dendrochronological investigations. The results show that there was a gradual increase in forest fire activity during the past 11,000 years. Between 11,000 and 5100 cal. yr BP, the mean fire return interval (FRI) oscillated between 600 and 200 years. During this period, regional data showed that cold temperature, humid climatic conditions, combined with steppe vegetation between 11,000–9000 cal. BP, and then the development of spruce-dominated forest between 9300 and 4600 cal. yr BP, were less conducive to fires. After 5100 cal. yr BP, a gradual increase in drought conditions through reduced precipitations, associated with the establishment of a Scots pine forest favored fire frequency, with a mean FRI under 200 years (range, 200–40 years). Nowadays (since CE 1500), human activity induces an unprecedented fire activity with a mean FRI below 100 years (range, 100–40 years).
650 _aboreal forest,
_952296
650 _a charcoal particles,
_952297
650 _a dendrochronology,
_952298
650 _apeatland,
_952299
650 _atree rings,
_952221
650 _a wildfires
_952300
700 _a Peyron, Odile
_952090
700 _a Joannin, Sébastien
_952301
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683619865593
942 _2ddc
_cART
999 _c12873
_d12873